Bump ubuntu

Bumps ubuntu from `8eab65d` to `6042500`.

---
updated-dependencies:
- dependency-name: ubuntu
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

cje-production/dockerfiles/ubuntu-gtk3-metacity/22.04-gtk3/Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:22.04@sha256:8eab65df33a6de2844c9aefd19efe8ddb87b7df5e9185a4ab73af936225685bb
+FROM ubuntu:22.04@sha256:6042500cf4b44023ea1894effe7890666b0c5c7871ed83a97c36c76ae560bb9b
 
 ### user name recognition at runtime w/ an arbitrary uid - for OpenShift deployments
 COPY scripts/uid_entrypoint /usr/local/bin/uid_entrypoint